Mold for building block units



FIG. 1 is a top plan view of a mold for building block units embodying my new design;

FIG. 2 is a side elevational view taken from the bottom of FIG. 1;

FIG. 3 is a side elevational view taken from the top of FIG. 1;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is an end elevational view taken from the right of FIG. 1, the side opposite being a mirror image thereof;

FIG. 6 is a cross-sectional view taken in the direction of the arrows on line 6--6 of FIG. 1. 

The design for a mold for building block units, as shown. 